Curious, what did the update do?Went in for my 5k multi point inspection.
Mentioned something about a PCM update and whether I wanted it done today or next visit.
I waited was out of there in an hour and a half.
So a inspect and reprogram module 181906FK.
I know what the PCM is and what it does, but was just wondering the specifics of the update. As @Wbino stated: “PCM PERFORM OPEN RTT 21-139”PCM is a powertrain control module. It’s the computer for your engine and transmission, among other things. There was probably a software update available for it.